The name Roztoky is derived from rozdělený tok, i.e. 'divided stream'. It is a common Czech geographical name for places founded at the confluence of a small stream with a larger watercourse.
Geography
Roztoky u Semil is located about northeast of Semily and southeast of Liberec. It lies in a hilly landscape of the Giant Mountains Foothills. The highest point is the hill Buč at above sea level. The Vošmenda Stream flows along the western municipal border and the stream Staroveský potok flows along the eastern municipal border.
History
The first written mention of Roztoky is from the period 1356–1360, when the monastery in Hradištěsoldthe village to Lords of Lemberk. In 1627, the estate was acquired by the Lamotte family.
Transport
There are no railways or major roads passing through the municipality.